苏联敖德萨工艺研究所发展了一种经过改进的灰铸铁合金作为旋转轴承材料。这种合金是在普通灰铸铁的铁水包中加入金属锑而制成的。这种铸件不需要进行热处理。推荐的化学成份如下:C 3.0～3.5%,Si 1.4～2.2%;Mn0.6～0.8%;Sb 0.3～0.65%;P<0.3%;S<0.12%;总的含碳量和含硅量的选择要考虑一定壁厚的铸件能获得珠光体的组织,并使碳、硅的总含量接近上限,因为锑会阻碍石墨化。 Odessa Institute of Technology, the Soviet Union developed an improved gray cast iron alloy as a bearing material. This alloy is made of ordinary gray cast iron ladle with metallic antimony. This casting does not require heat treatment. The recommended chemical compositions are as follows: C 3.0-3.5% Si 1.4-2.2% Mn 0.6-0.8% Sb 0.3-0.65% P <0.3% S <0.12% Total carbon content and silicon content The choice to consider a certain thickness of the casting can get the pearlite organization, and the total carbon and silicon content close to the ceiling, because antimony will impede the graphitization.